Finding the Fourth Proportional to 11,422.62, 17,131.82 and 5,181.13

Step by Step Solution

1. Step 1: Write the proportion equation
   11,422.62 : 17,131.82 = 5,181.13 : x
2. Step 2: Convert to fraction form
   11,422.62/17,131.82 = 5,181.13/x
3. Step 3: Cross multiply
   11,422.62x = 17,131.82 × 5,181.13
4. Step 4: Simplify right side
   11,422.62x = 88,762,186.56
5. Step 5: Solve for x
   x = 88,762,186.56/11,422.62
6. Step 6: Final answer
   x = 7,770.74